Crank-shaft gear for looms



Sept. 30 1924. 1,509,988

w. H, THOMPSON ET AL CRANK SHAFT GEAR FOR LOOMS Filed March 23. 1923 2 Sheets-Sheet 1 8 n'vembow Sept. 30, 1924. 1,509,988

- w. H. THOMPSON ET AL CRANK SHAFT GEAR FOR LOOMS Fi led March 23. 1923 2 Sheets-Sheet 3 WJICfZoM mz l I Ua z, WZ ZiKJJFL' 61H omni "proved crank shaft gear for looms;

Patented Sept. 30, 192 1:e

UNITED STATES ATENT OFFICE.

WILLIAM HENRY THOMPSON AND IRA FRANKLING CAPE, OF SENECA, SOUTH CAROLINA.

CRANK-SHAFT GEAR non LOOMS.

Application filed. March 23, 1923. Serial No. 627,061.

To all whom it may concern.

Be it known that we, WILLIAM H. THOMP- SON and IRA F. CAPE, citizens of the United States, residing at Seneca, in. the county of Oconee and State of South Carolina, have invented certain new and useful Improvements in Crank-Shaft Gears for Looms, of which the following is a specification.

In carrying out the present invention it is our purpose to provide a crank shaft gear for looms that may be bolted to the inside of the fastening pulley or friction plate, this gear being provided with a removable toothed segment that may be removed from the gear when worn and a new segment inserted in its place for thereby overcoming the usual necessity of discarding the entire gear, it being a well established fact that in loom crank shaft gears the wear is always upon a specific portion of the gear.

A further purpose of our invention is the provision of such a gear that is provided with a removable segment which will allow the time of pick on the loom being changed without meshing with the teeth in the main part of the gear.

A further purpose is the provision of such a crank shaft gear that consists of two parts, one of the same being a removable segment containing a certain number of teeth, the main body part of the gear being so constructed as to be easily attached to the inside of the tight pulley or the friction plate of the loom by merely unbolting and removing the usual gear on the loom and bolting in place a gear of the present character.

The nature and advantages of the invention will be better understood when the following detailed description is read in connection with the accompanying drawings, the invention residing in the construction, combination, and arrangement of parts as claimed.

In the drawings forming part of this application, like numerals of reference indi cate similar parts in the several views, and wherein:

Figure 1 is a front elevation of my im- Figure 2 is a rear elevation thereof;

Figure 3 is an end View of the main body portion ofthe gear; and

Figure a is an end elevation of the removable section of the gear.

Referring to the drawings in detail, 5 designates a crank shaft gear substantially similar to the crank shaft gears now upon conventional types of looms with the exception that the same is provided with a cutout 6. Adapted for position within this cut-out portion of the said gear is a removable segment 7. The gear 5 as well as the removable segment 7 constitutes a rim portion 8 and flange portion 9.

Upon opposite sides of the rim portion of a segment 7 there is formed extension lugs 10 that are adapted for engaging under the side edges of the said opening 6 of the gear for preventing an upward movement of the segment within said opening. The opposite sides of the flange portion 9 of the said segment 7 are also provided with extension plates 11 that are adapted for engagement with the side edges of the flange portion 9 of said gear for preventing a forward sliding movement of the segment with respect to the gear.

The flange portion of the gear and segment are provided with openings 12 for the reception of the usual securing plates after the gear has been positioned upon the loom crank shaft.

It is to be noted that the wear upon the gear is also upon the teeth of the removable segment 7 and after these teeth have become worn to a certain degree it is only necessary that a new segment be inserted within the gear opening which is obviously a great saving in the cost of running looms, it now being necessary to provide a new gear when one or two of the teeth thereof have become worn or broken.

In view of the above description it is believed that the advantages and operation of a crank shaft gear for looms of the present nature will be fully appreciated by those skilled in the art and although we have herein shown and described the preferred embodiment of the present invention, it is nevertheless to be understood that side minor changes may be made therein, without departing from the spirit and scope of the invention as claimed.

Having thus described our invention, what we claim as new and desire to secure by Letters Patent is:

A gear wheel adapted to be applied to the of a pulley which is fixedly mounted upon the shaft, comprising an arcnate body provided with a central opening adapted to receive the shaft, the body being provided at one side with a recess leading in from the outer edge thereof and communicating with the said opening, the said recess having radially disposed side walls which are disposed at an acute angle with relation to each other and a segment adapted to com pletely fill the recess and provided with an inner curved edge adapted to conform with the curvature of the edge of the opening in the body, the segment being provided at, its outer side and at its inner portion with lugs adapted to bear against the side surface of the intermediate portion of the body, the bodv and the segment being provided in the vicinity of their outer edges with outstanding flange sections adapted to register with: each other when the segment is in position in the recess the inner surface of the flange upon the body being inwardly inclined and the flange of the segment being provided with lugs adapted to engage under the end portions of the inclined surface of the flange section which is carried by the body.

In testimony whereof we afiix our signatures.

VII/LIAM HENRY 'IlI-IOMPSON.

IRA FRANKLING CAPE. 

